Grate construction



y 1933- J; 5. T bMPsQN 1,918,497

' CONSTRUCTION fFi 11ea Feb. 25, 19 0 2 ne ts-sn et 1 ATTORNEY? Jul ls, 1933. J s, THOMPS N v 1,918,497

GRA'I-E CONSTRUCTION Filed Feb. 25, 1930 2 Sheets-Sheet 2 ATTORNEY f i Patefi edfjol 18,1933

supported on itis properlyconsumed. & i

Ininy cospending application Serial; No,

, area of the top of the frame mayirepresent' forth the diiliculties involvednin the hseofgrates as: at"presenticonstructed these. 'di'fiiis mention, for RoofiErQtEQN Ew' ibim, As'smnoit a -rm mycon og j J gim e M 'A VEPAN-" IH Q A CQBWRATIQKPFPWJAWARE i 5 A v ,ceeme mie j a This invention relates to, grate "construe tionslo'f the type used in locomotives, malrine boiler .flirne'c'e'siand forlothe'r' siniilar heavy duty purposes. 7 vMore specifically, the inv'en tionis concerned with. .a grate made up of a, grate frame and grate bars supported, there? in, the frame beingso eonstrueted that. fuel 431,282 filed February 25511930, 1 have fset- Icultie'sarising from the failure ,on jthe j part of the builders to; appreeiete' that the top of the grate frame serves as a" fuel support equally-with the-grate bars, :In the-usual grate frame of vpresent (ionstruction Lthe' total 2lS-II1UCh aS% of theitotsil inside;crosssec-,

3 :tion of the firebox; and sincetheframeis a" solid strtictureend itstop has-no provision for the passagegofe fair to the fuel 7 supported thereon, theresultisthatjabout 15%;015 the 'fuelbed receives en-insutficientflsupply ofeir, burns slul'ggishly with incomplete combusti-on, forms ncli'nkers and-j generally. represents -aloss. l l

- In the a oplieetion referredto; heve idis closed andcle-imed-a novel grate construction by which'these-difliculties mayybe avoided.

-Thepresentin venti0nis based on' the same principles .as that of the applicatiomg-but ture'of thenew grate.

sockets for the reception of the trunn-i'ons on theends of the bars. Between thesesockets, 5 o l to recelve trunn onsofapalrofbarsm allgn them and lying on opposite sideszoftheinem- 7 1 differs therefrom {in constructional details; these differences aflordingcertai'n advantages overlthe other construction in Lt-he intnufac- 1 The present grate'incllides a-fgrate frame, provided with the 'i1sui1l grate bar supports, which?"ordinarily take the form of trunnion the frame is out away to forrn depressions,

- inv'which are mounted remove-tile units which,

constitute the fuel-supporting partsot 2 the:

frame; 1 Each 'unit is; formed with; winultipliicity of small filel-supportingv areaseat its units. In a sidefrememembenithereis a t'hrough seid passages;

111g drawings in which of the parts shoW Ii'in Fig. 3';-a-nd.

nnitinleach'depressiohgiwhileind Cell tretrame rn ember two unltshare placed farce f totace 111 a depression. The "un tslpro eotl above the top of the frame rnemberfso that th'eletter substantially olit ofoontaet t,l1efuel,.ind the units and member eregth'o'r Fore better 'understendinght of at gri-teeon'strnctd in eooordenc'e' Fig. 3 is 2t View in side ing'unit in place-therein;

bet illustrated in Fig.1 with it fuehsupport l Fip; 4 is a; plan View part-1y; iii'orosssectionzf.

1Fig2=5 is a sectional iew on theline 5-?5 3 Referring'how to e-the drawings, the grate .1 is illustrated as consistingof airameimade upqot side members 110 of; which only one is shown; a center member ll, and a plurality of grate bars 12 mounted between the center memberand one of the side members; alhere :aretwoor rnoregroupsof grate bars in? the 3 I 1 grate depending on thesizebfthe latter, and

the bars ofeachgro up are connectedtogether v by e'oolnmon shaker rod so thatthey canbe ,1

shaken in unisonin accordance"Withgstandi in the topso'f the fraime Inem'bers a-nd' the her. The'hdrsllprefer'toemploy in the new application 10f Buckley, {'Seri'el No. 338,352,

'ard practicef The bars "arefprovided I trl'innio'ns 13 received in tr inniomsookets 14K i A filed February 8,1929, al thou gh standalrd bars 'may; be used'ifdesiredi I The IBuckl-ey bar consists of a carrieriimember e15 tindd phirality of fuel-supporting; oross bars 16,

ed I downwardly proj eotingjlng at its bottom on which the Unit rests, said lug raising-.the

bottom of the unit abovethe bottom of the depression, and means, on said units, formalin-.

7 JAMES STHOMPSQN. V

staining them separated. 

